Assessment of a Shallow Water Area in the Tagus Estuary Using Unmanned Underwater Vehicle (or AUV's), Vector-Sensors, Unmanned Surface Vehicles, and Hexacopters – REX'17 (original) (raw)

Autonomous Shallow Water Hydrographic Survey Using a Proto-Type USV

Journal of Marine Science and Engineering

Maritime unmanned systems (MUS) have gained widespread usage in a diverse range of hydrographic survey activities, including harbor/port surveys, beach and coastline monitoring, environmental assessment, and military operations. The present article explains a validated, rapid, and reliable technique for processing hydrographic data that was obtained via an autonomous hydrographic survey, and which was executed by a prototype unmanned surface vessel (USV) belonging to the Unmanned Survey Solutions (USS) corporation. The experimentation was part of the annual Multinational Exercise Robotic Experimentation and Prototyping that was augmented by Maritime Unmanned Systems 22 (REPMUS22), which was held in the national waters of Portugal. The main objective of this experimentation was to assess the underwater environment over an ocean beach for an amphibious landing exercise. Moreover, the integration of the multibeam system with the autonomous prototype vessel was assessed. A short compari...

AUV based multi-vehicle collaboration: Salinity studies in Mar Menor Coastal lagoon

3rd IFAC Workshop on Navigation, Guidance and Control of Underwater Vehicles, 2012

An experiment with different AUVs was carried out in the Mar Menor Coastal Lagoon from October 31 to November 5 in order to measure and assess the influence of the water from the Mar Menor on the adjacent area of the Mediterranean. This was carried out as a result of the meeting held between several institutions from the Iberian Peninsula and EEUU (see Vilanova Marine Science/Robotics Meeting 2010). The experiment was to launch several AUVs at the same time in different zones of the Mediterranean and Mar Menor lagoon. AUVs took salinity data trying to do a coordinated mission during two operative days (November 3 and November 5). Others days of the experiment were used to the vehicle's preparation and error correction (November 2 and November 4). This paper presents the steps followed in preparation and operative days with the set of AUVs. This paper presents also the salinity results obtained during these missions.

Integrating Sensors into a Marine Drone for Bathymetric 3D Surveys in Shallow Waters

Sensors, 2015

This paper demonstrates that accurate data concerning bathymetry as well as environmental conditions in shallow waters can be acquired using sensors that are integrated into the same marine vehicle. An open prototype of an unmanned surface vessel (USV) named MicroVeGA is described. The focus is on the main instruments installed on-board: a differential Global Position System (GPS) system and single beam echo sounder; inertial platform for attitude control; ultrasound obstacle-detection system with temperature control system; emerged and submerged video acquisition system. The results of two cases study are presented, both concerning areas (Sorrento Marina Grande and Marechiaro Harbour, both in the Gulf of Naples) characterized by a coastal physiography that impedes the execution of a bathymetric survey with traditional boats. In addition, those areas are critical because of the presence of submerged archaeological remains that produce rapid changes in depth values. The experiments confirm that the integration of the sensors improves the instruments' performance and survey accuracy.

Development of the AUV ‘ISiMI’ and a free running test in an Ocean Engineering Basin

Ocean Engineering, 2009

The Korea Ocean Research and Development Institute (KORDI) has developed a small AUV named ISiMI. The mission of ISiMI is to work as a test-bed AUV for the development and validation of various algorithms and instruments required to enhance the AUV's functions. The design concept of ISiMI is that of a vehicle small enough to cruise the Ocean Engineering Basin (OEB) of KORDI and to be handled by one or two people. The downsized design and the cruising ability in its tank enable fast experimental feedback on AUV technologies and a shorter development period for new technologies. This paper presents a review of our research work on the development of ISiMI, with a performance evaluation by simulation and an experimental test. After the design and implementation of ISiMI, including its positioning system in the OEB, are presented, a series of test results in the OEB and discussions of the results are presented, with comparisons of the simulation and experimental outputs.

DEVELOPMENT OF UNMANNED SURFACE VEHICLE (USV) FOR SEA PATROL AND ENVIRONMENTAL MONITORING, International Conference on Marine Technology Kuala Terengganu, Malaysia, 20-22 October 2012

Malaysia is a country with long coastline and large sea areas. There is a need for efficient patrol and surveillance of the vast Malaysian Exclusive Economic Zone. Patrolling using traditional resources such as patrol boats and ships puts a strain on operational costs and personnel. A remotely operated unmanned vehicles are expected to carry out the tasks in a more economic and efficient manner. This paper describes the development of an indigenous Unmanned Surface Vehicle (USV) in the form of a remote control boat with real-time data collection capability. Although the USV platform is generic, the present system is tailored towards environmental monitoring, fishing stock survey, observing coral/reef environmental conditions and collecting water quality data. Data collectability and storage are crucial. The USV is based on modified jet-ski hull structure and equipped with other instruments such as Global Positioning System (GPS), Inertial Measurement Unit (IMU), Fish finder, DS5 Hydrolab oceanographic sensor, surveillance cameras and underwater camera. Wireless communication with 2.4 GHz frequency is used for monitoring, control and real-time data collection. Full scale experimental results shows all systems installed onboard are functioning well and the USV is capable to operate at open sea with reasonable horizontal distance from shore line.

Multi-Platforms and Multi-Sensors Integrated Survey for the Submerged and Emerged Areas

Journal of Marine Science and Engineering

In this paper, the state-of-the-art concerning new methodologies for surveying in coastal areas in order to obtain an efficient quantification of submerged and emerged environments is described and evaluated. This work integrates an interdisciplinary approach involving both geomatics and robotics and focuses on definition, implementation, and development of a methodology to execute integrated aerial and underwater survey campaigns in shallow water areas. A preliminary test was performed at Gorzente Lakes near Genoa (Italy), to develop and integrate different survey techniques, enabling working in a smarter way, reducing costs and increasing safety for the operators. In this context, Remote Sensing techniques were integrated with a UAV (Unmanned Aerial Vehicle) carrying an aerial optical sensor for photogrammetry and with an ASV (Autonomous Surface Vehicle) expressly addressed to work in extremely shallow water with underwater acoustic sensors (single echo sounder). The obtained cont...

Unmanned Surface And Undersea Vehicles: Capabilities And Potential

International conference KNOWLEDGE-BASED ORGANIZATION, 2015

This paper proposes a new technological solution for the sea observation using an Unmanned Surface Vehicle (USV) or Unmanned Undersea Vehicles (UUV). The term USV refers to any vehicle that operates on the surface of the water without a crew. USVs have the potential, and in some cases the demonstrated ability, to reduce risk to manned forces, provide the necessary force multiplication to accomplish military missions, perform tasks which manned vehicles cannot, and do so in a way that is affordable for the navy. In this paper we examine the use of unmanned vehicles (USV and UUV) which can replace the manned sea patrol system with additional sensors and high performance communication systems in future.

Autonomous Underwater Vehicles (AUVs): Their past, present and future contributions to the advancement of marine geoscience

Marine Geology, 2014

Autonomous Underwater Vehicles (AUVs) have a wide range of applications in marine geoscience, and are increasingly being used in the scientific, military, commercial, and policy sectors. Their ability to operate autonomously of a host vessel makes them well suited to exploration of extreme environments, from the world's deepest hydrothermal vents to beneath polar ice sheets. They have revolutionised our ability to image the seafloor, providing higher resolution seafloor mapping data than can be achieved from surface vessels, particularly in deep water. This contribution focuses on the major advances in marine geoscience that have resulted from AUV data. The primary applications are i) submarine volcanism and hydrothermal vent studies, ii) mapping and monitoring of low-temperature fluid escape features and chemosynthetic ecosystems, iii) benthic habitat mapping in shallow-and deep-water environments, and iv) mapping of seafloor morphological features (e.g. bedforms generated beneath ice or sediment-gravity flows). A series of new datasets is presented that highlight the growing versatility of AUVs for marine geoscience studies, including i) multi-frequency acoustic imaging of trawling impacts on deep-water coral mounds, iii) collection of high-resolution seafloor photomosaics at abyssal depths, and iii) velocity measurements of active submarine density flows. Future developments in AUV technology of potential relevance to marine geoscience include new vehicles with enhanced hovering, long endurance, extreme depth, or rapid response capabilities, while development of new sensors will further expand the range of geochemical parameters that can be measured.